Cray CRAY-1 - 027 Ijx Leading Zero Count of (Sj) to Ai

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: 027ijx Leading zero count of (Sj) to Ai :
1 1
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This instruction counts the number of leading zeros in Sj and enters
the
result into the low order seven bits of Ai. The upper 17 bits of
Ai are zeroed.
The instruction is executed in the population/leading zero count unit.
Hold issue conditions
034 - 037 in process
Exchange in process
A register access conflict
A,i reserved
Sj reserved
Execution
time
Instruction issue 1 CP
A.i ready 3 CPs
Special cases
(Ai) = 64 if j = 0
(Ai) = 0 if (Sj) is negative
2240004
4-26
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